暴露在关键窗口中的环境空气污染和预先概念队列中的自发流产
Anne Marie Z Jukic1, Kathryn S Konrad2, Ian D Buller2
1Epidemiology Branch, National Institute of Environmental Health Sciences, Durham, NC, 27709, USA.
Environmental research
|May 30, 2025
概括
暴露于空气污染可能会增加自发流产的风险,特别是在关键的生殖期. 低维生素D水平似乎加剧了这种风险,突出了潜在的公共卫生影响.
科学领域:
- 环境流行病学环境流行病学
- 生殖健康 生殖健康
- 毒理学 毒理学 毒理学
背景情况:
- 空气污染是导致自发流产的潜在危险因素.
- 之前的研究已经产生了异质的结果,并且没有使用暴露混合物分析.
- 炎症是一种可疑的机制,将空气污染与不良妊娠结果联系起来.
研究的目的:
- 调查暴露于空气污染物混合物和自发流产风险之间的关联.
- 检查怀孕和早期怀孕期间暴露的关键窗口.
- 评估维生素D状态对这些关联的影响.
主要方法:
- 预期的时间到怀孕队列研究 (N=446) 与自发流产数据 (N=101).
- 使用高级建模量化对标准空气污染物 (PM10,PM2.5,CO,NO,NO2,SO2,O3) 的平均和峰值暴露量.
- 应用单一污染物和基于量子的g计算 (混合物) 模型,以维生素D水平分层的灵敏度分析.
主要成果:
- 暴露混合物模型表明,在精子生成,早期卵泡发育和卵期暴露于空气污染物时,自发流产风险可能会增加.
- 在维生素D水平较低的个体中,相关性明显更强.
- 具体来说,在卵泡期增加的臭氧暴露显示,与维生素D高的人相比,维生素D低的人中流产的风险明显更高 (HR [CI]: 3.1 [1.3, 7.4]).
结论:
- 空气污染物可能与轻微增加自发流产风险有关.
- 使用暴露混合方法的大型研究是有必要的,以证实这些发现.
- 低维生素D和空气污染之间的相互作用需要进一步研究公共卫生策略,包括维生素D补充剂.
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